-65.42% is the change from 240 to 83
Calculation steps:
[( 83 - 240 ) ÷ 240] x 100 = -65.42%
Formula
Percentage change = [(83 - 240) / 240] x 100
Subtract the new number by the original number
83 - 240 = -157
-157 ÷ 240 = -0.6541666666666667
-0.6541666666666667 x 100 = -65.42%