-39.42% is the change from 137 to 83
Calculation steps:
[( 83 - 137 ) ÷ 137] x 100 = -39.42%
Formula
Percentage change = [(83 - 137) / 137] x 100
Subtract the new number by the original number
83 - 137 = -54
-54 ÷ 137 = -0.39416058394160586
-0.39416058394160586 x 100 = -39.42%