-25.31% is the change from 644 to 481
Calculation steps:
[( 481 - 644 ) ÷ 644] x 100 = -25.31%
Formula
Percentage change = [(481 - 644) / 644] x 100
Subtract the new number by the original number
481 - 644 = -163
-163 ÷ 644 = -0.2531055900621118
-0.2531055900621118 x 100 = -25.31%