510% is the change from 40 to 244
Calculation steps:
[( 244 - 40 ) ÷ 40] x 100 = 510%
Formula
Percentage change = [(244 - 40) / 40] x 100
Subtract the new number by the original number
244 - 40 = 204
204 ÷ 40 = 5.1
5.1 x 100 = 510%
Example