-77.55% is the change from 686 to 154
Calculation steps:
[( 154 - 686 ) ÷ 686] x 100 = -77.55%
Formula
Percentage change = [(154 - 686) / 686] x 100
Subtract the new number by the original number
154 - 686 = -532
-532 ÷ 686 = -0.7755102040816326
-0.7755102040816326 x 100 = -77.55%