1222.5% is the change from 40 to 529
Calculation steps:
[( 529 - 40 ) ÷ 40] x 100 = 1222.5%
Formula
Percentage change = [(529 - 40) / 40] x 100
Subtract the new number by the original number
529 - 40 = 489
489 ÷ 40 = 12.225
12.225 x 100 = 1222.5%
Example