-48.7% is the change from 154 to 79
Calculation steps:
[( 79 - 154 ) ÷ 154] x 100 = -48.7%
Formula
Percentage change = [(79 - 154) / 154] x 100
Subtract the new number by the original number
79 - 154 = -75
-75 ÷ 154 = -0.487012987012987
-0.487012987012987 x 100 = -48.7%