-87.93% is the change from 174 to 21
Calculation steps:
[( 21 - 174 ) ÷ 174] x 100 = -87.93%
Formula
Percentage change = [(21 - 174) / 174] x 100
Subtract the new number by the original number
21 - 174 = -153
-153 ÷ 174 = -0.8793103448275862
-0.8793103448275862 x 100 = -87.93%