-25.47% is the change from 644 to 480
Calculation steps:
[( 480 - 644 ) ÷ 644] x 100 = -25.47%
Formula
Percentage change = [(480 - 644) / 644] x 100
Subtract the new number by the original number
480 - 644 = -164
-164 ÷ 644 = -0.2546583850931677
-0.2546583850931677 x 100 = -25.47%