-81.95% is the change from 931 to 168
Calculation steps:
[( 168 - 931 ) ÷ 931] x 100 = -81.95%
Formula
Percentage change = [(168 - 931) / 931] x 100
Subtract the new number by the original number
168 - 931 = -763
-763 ÷ 931 = -0.8195488721804511
-0.8195488721804511 x 100 = -81.95%