215% is the change from 40 to 126
Calculation steps:
[( 126 - 40 ) ÷ 40] x 100 = 215%
Formula
Percentage change = [(126 - 40) / 40] x 100
Subtract the new number by the original number
126 - 40 = 86
86 ÷ 40 = 2.15
2.15 x 100 = 215%
Example