-84.59% is the change from 662 to 102
Calculation steps:
[( 102 - 662 ) ÷ 662] x 100 = -84.59%
Formula
Percentage change = [(102 - 662) / 662] x 100
Subtract the new number by the original number
102 - 662 = -560
-560 ÷ 662 = -0.8459214501510574
-0.8459214501510574 x 100 = -84.59%