OK... I'm in ECO mode. Leg Power is 225w and % of assistance is 10%... I should get 22.5w of battery boost but I'm actually getting 46w! (Double)... Earlier in the ride I would always get within the range of assistance 1 to 10% but as soon as I switch modes ECO to TRAIL and then back to ECO weird things start to happen and I get twice as much boost as requested.... I hope this helps... I'm sure I'm the only one that has this problem!
Blevo as far as I know is calculating power by multiplying V*I from the main battery (that means if you have an extender, the results is not correct unless you tell it that you have one), and so this is not the power from the motor but the power absorbed, you should calculate the loss for the efficiency of the motor, the power factor, the drive loss thru the chain to have the power at the pedal (mechanical).
But anyway, let's simplify a lot, and let's say Blevo shows the mechanical power.
Since 100% in the Levo 2019 means 320% proportional, if your leg power is 225W the assistance should be (indicatively): 225*3.2*0.1=72W not 22.5W, the answer is probably in the middle...