-99.17% is the change from 120 to 1
Calculation steps:
[( 1 - 120 ) ÷ 120] x 100 = -99.17%
Formula
Percentage change = [(1 - 120) / 120] x 100
Subtract the new number by the original number
1 - 120 = -119
-119 ÷ 120 = -0.9916666666666667
-0.9916666666666667 x 100 = -99.17%