-79.76% is the change from 672 to 136
Calculation steps:
[( 136 - 672 ) ÷ 672] x 100 = -79.76%
Formula
Percentage change = [(136 - 672) / 672] x 100
Subtract the new number by the original number
136 - 672 = -536
-536 ÷ 672 = -0.7976190476190477
-0.7976190476190477 x 100 = -79.76%