-47.8% is the change from 159 to 83
Calculation steps:
[( 83 - 159 ) ÷ 159] x 100 = -47.8%
Formula
Percentage change = [(83 - 159) / 159] x 100
Subtract the new number by the original number
83 - 159 = -76
-76 ÷ 159 = -0.4779874213836478
-0.4779874213836478 x 100 = -47.8%