-78.86% is the change from 686 to 145
Calculation steps:
[( 145 - 686 ) ÷ 686] x 100 = -78.86%
Formula
Percentage change = [(145 - 686) / 686] x 100
Subtract the new number by the original number
145 - 686 = -541
-541 ÷ 686 = -0.7886297376093294
-0.7886297376093294 x 100 = -78.86%