825% is the change from 40 to 370
Calculation steps:
[( 370 - 40 ) ÷ 40] x 100 = 825%
Formula
Percentage change = [(370 - 40) / 40] x 100
Subtract the new number by the original number
370 - 40 = 330
330 ÷ 40 = 8.25
8.25 x 100 = 825%
Example