710% is the change from 40 to 324
Calculation steps:
[( 324 - 40 ) ÷ 40] x 100 = 710%
Formula
Percentage change = [(324 - 40) / 40] x 100
Subtract the new number by the original number
324 - 40 = 284
284 ÷ 40 = 7.1
7.1 x 100 = 710%
Example