-50% is the change from 124 to 62
Calculation steps:
[( 62 - 124 ) ÷ 124] x 100 = -50%
Formula
Percentage change = [(62 - 124) / 124] x 100
Subtract the new number by the original number
62 - 124 = -62
-62 ÷ 124 = -0.5
-0.5 x 100 = -50%
Example