-71.89% is the change from 644 to 181
Calculation steps:
[( 181 - 644 ) ÷ 644] x 100 = -71.89%
Formula
Percentage change = [(181 - 644) / 644] x 100
Subtract the new number by the original number
181 - 644 = -463
-463 ÷ 644 = -0.718944099378882
-0.718944099378882 x 100 = -71.89%