617.5% is the change from 40 to 287
Calculation steps:
[( 287 - 40 ) ÷ 40] x 100 = 617.5%
Formula
Percentage change = [(287 - 40) / 40] x 100
Subtract the new number by the original number
287 - 40 = 247
247 ÷ 40 = 6.175
6.175 x 100 = 617.5%
Example