790% is the change from 40 to 356
Calculation steps:
[( 356 - 40 ) ÷ 40] x 100 = 790%
Formula
Percentage change = [(356 - 40) / 40] x 100
Subtract the new number by the original number
356 - 40 = 316
316 ÷ 40 = 7.9
7.9 x 100 = 790%
Example