907.5% is the change from 40 to 403
Calculation steps:
[( 403 - 40 ) ÷ 40] x 100 = 907.5%
Formula
Percentage change = [(403 - 40) / 40] x 100
Subtract the new number by the original number
403 - 40 = 363
363 ÷ 40 = 9.075
9.075 x 100 = 907.5%
Example