-81.56% is the change from 933 to 172
Calculation steps:
[( 172 - 933 ) ÷ 933] x 100 = -81.56%
Formula
Percentage change = [(172 - 933) / 933] x 100
Subtract the new number by the original number
172 - 933 = -761
-761 ÷ 933 = -0.8156484458735263
-0.8156484458735263 x 100 = -81.56%