-65.82% is the change from 237 to 81
Calculation steps:
[( 81 - 237 ) ÷ 237] x 100 = -65.82%
Formula
Percentage change = [(81 - 237) / 237] x 100
Subtract the new number by the original number
81 - 237 = -156
-156 ÷ 237 = -0.6582278481012658
-0.6582278481012658 x 100 = -65.82%