-86.92% is the change from 237 to 31
Calculation steps:
[( 31 - 237 ) ÷ 237] x 100 = -86.92%
Formula
Percentage change = [(31 - 237) / 237] x 100
Subtract the new number by the original number
31 - 237 = -206
-206 ÷ 237 = -0.869198312236287
-0.869198312236287 x 100 = -86.92%