-75.62% is the change from 681 to 166
Calculation steps:
[( 166 - 681 ) ÷ 681] x 100 = -75.62%
Formula
Percentage change = [(166 - 681) / 681] x 100
Subtract the new number by the original number
166 - 681 = -515
-515 ÷ 681 = -0.7562408223201175
-0.7562408223201175 x 100 = -75.62%