-72.15% is the change from 237 to 66
Calculation steps:
[( 66 - 237 ) ÷ 237] x 100 = -72.15%
Formula
Percentage change = [(66 - 237) / 237] x 100
Subtract the new number by the original number
66 - 237 = -171
-171 ÷ 237 = -0.7215189873417721
-0.7215189873417721 x 100 = -72.15%