607.5% is the change from 40 to 283
Calculation steps:
[( 283 - 40 ) ÷ 40] x 100 = 607.5%
Formula
Percentage change = [(283 - 40) / 40] x 100
Subtract the new number by the original number
283 - 40 = 243
243 ÷ 40 = 6.075
6.075 x 100 = 607.5%
Example