-50.3% is the change from 167 to 83
Calculation steps:
[( 83 - 167 ) ÷ 167] x 100 = -50.3%
Formula
Percentage change = [(83 - 167) / 167] x 100
Subtract the new number by the original number
83 - 167 = -84
-84 ÷ 167 = -0.5029940119760479
-0.5029940119760479 x 100 = -50.3%