-84.5% is the change from 658 to 102
Calculation steps:
[( 102 - 658 ) ÷ 658] x 100 = -84.5%
Formula
Percentage change = [(102 - 658) / 658] x 100
Subtract the new number by the original number
102 - 658 = -556
-556 ÷ 658 = -0.8449848024316109
-0.8449848024316109 x 100 = -84.5%