-65.32% is the change from 620 to 215
Calculation steps:
[( 215 - 620 ) ÷ 620] x 100 = -65.32%
Formula
Percentage change = [(215 - 620) / 620] x 100
Subtract the new number by the original number
215 - 620 = -405
-405 ÷ 620 = -0.6532258064516129
-0.6532258064516129 x 100 = -65.32%