-82.58% is the change from 620 to 108
Calculation steps:
[( 108 - 620 ) ÷ 620] x 100 = -82.58%
Formula
Percentage change = [(108 - 620) / 620] x 100
Subtract the new number by the original number
108 - 620 = -512
-512 ÷ 620 = -0.8258064516129032
-0.8258064516129032 x 100 = -82.58%