-80.32% is the change from 620 to 122
Calculation steps:
[( 122 - 620 ) ÷ 620] x 100 = -80.32%
Formula
Percentage change = [(122 - 620) / 620] x 100
Subtract the new number by the original number
122 - 620 = -498
-498 ÷ 620 = -0.8032258064516129
-0.8032258064516129 x 100 = -80.32%