-76% is the change from 100 to 24
Calculation steps:
[( 24 - 100 ) ÷ 100] x 100 = -76%
Formula
Percentage change = [(24 - 100) / 100] x 100
Subtract the new number by the original number
24 - 100 = -76
-76 ÷ 100 = -0.76
-0.76 x 100 = -76%
Example