-62.02% is the change from 129 to 49
Calculation steps:
[( 49 - 129 ) ÷ 129] x 100 = -62.02%
Formula
Percentage change = [(49 - 129) / 129] x 100
Subtract the new number by the original number
49 - 129 = -80
-80 ÷ 129 = -0.6201550387596899
-0.6201550387596899 x 100 = -62.02%