-21.91% is the change from 671 to 524
Calculation steps:
[( 524 - 671 ) ÷ 671] x 100 = -21.91%
Formula
Percentage change = [(524 - 671) / 671] x 100
Subtract the new number by the original number
524 - 671 = -147
-147 ÷ 671 = -0.21907600596125187
-0.21907600596125187 x 100 = -21.91%