-83.5% is the change from 988 to 163
Calculation steps:
[( 163 - 988 ) ÷ 988] x 100 = -83.5%
Formula
Percentage change = [(163 - 988) / 988] x 100
Subtract the new number by the original number
163 - 988 = -825
-825 ÷ 988 = -0.8350202429149798
-0.8350202429149798 x 100 = -83.5%