-63.41% is the change from 41 to 15
Calculation steps:
[( 15 - 41 ) ÷ 41] x 100 = -63.41%
Formula
Percentage change = [(15 - 41) / 41] x 100
Subtract the new number by the original number
15 - 41 = -26
-26 ÷ 41 = -0.6341463414634146
-0.6341463414634146 x 100 = -63.41%