-86.5% is the change from 622 to 84
Calculation steps:
[( 84 - 622 ) ÷ 622] x 100 = -86.5%
Formula
Percentage change = [(84 - 622) / 622] x 100
Subtract the new number by the original number
84 - 622 = -538
-538 ÷ 622 = -0.864951768488746
-0.864951768488746 x 100 = -86.5%