-79.12% is the change from 680 to 142
Calculation steps:
[( 142 - 680 ) ÷ 680] x 100 = -79.12%
Formula
Percentage change = [(142 - 680) / 680] x 100
Subtract the new number by the original number
142 - 680 = -538
-538 ÷ 680 = -0.7911764705882353
-0.7911764705882353 x 100 = -79.12%