-77.2% is the change from 671 to 153
Calculation steps:
[( 153 - 671 ) ÷ 671] x 100 = -77.2%
Formula
Percentage change = [(153 - 671) / 671] x 100
Subtract the new number by the original number
153 - 671 = -518
-518 ÷ 671 = -0.7719821162444114
-0.7719821162444114 x 100 = -77.2%