-71.48% is the change from 831 to 237
Calculation steps:
[( 237 - 831 ) ÷ 831] x 100 = -71.48%
Formula
Percentage change = [(237 - 831) / 831] x 100
Subtract the new number by the original number
237 - 831 = -594
-594 ÷ 831 = -0.7148014440433214
-0.7148014440433214 x 100 = -71.48%