-90.32% is the change from 620 to 60
Calculation steps:
[( 60 - 620 ) ÷ 620] x 100 = -90.32%
Formula
Percentage change = [(60 - 620) / 620] x 100
Subtract the new number by the original number
60 - 620 = -560
-560 ÷ 620 = -0.9032258064516129
-0.9032258064516129 x 100 = -90.32%