-74.89% is the change from 681 to 171
Calculation steps:
[( 171 - 681 ) ÷ 681] x 100 = -74.89%
Formula
Percentage change = [(171 - 681) / 681] x 100
Subtract the new number by the original number
171 - 681 = -510
-510 ÷ 681 = -0.748898678414097
-0.748898678414097 x 100 = -74.89%