-84.89% is the change from 662 to 100
Calculation steps:
[( 100 - 662 ) ÷ 662] x 100 = -84.89%
Formula
Percentage change = [(100 - 662) / 662] x 100
Subtract the new number by the original number
100 - 662 = -562
-562 ÷ 662 = -0.8489425981873112
-0.8489425981873112 x 100 = -84.89%