-74.69% is the change from 644 to 163
Calculation steps:
[( 163 - 644 ) ÷ 644] x 100 = -74.69%
Formula
Percentage change = [(163 - 644) / 644] x 100
Subtract the new number by the original number
163 - 644 = -481
-481 ÷ 644 = -0.7468944099378882
-0.7468944099378882 x 100 = -74.69%