-88.55% is the change from 620 to 71
Calculation steps:
[( 71 - 620 ) ÷ 620] x 100 = -88.55%
Formula
Percentage change = [(71 - 620) / 620] x 100
Subtract the new number by the original number
71 - 620 = -549
-549 ÷ 620 = -0.885483870967742
-0.885483870967742 x 100 = -88.55%