-25.62% is the change from 644 to 479
Calculation steps:
[( 479 - 644 ) ÷ 644] x 100 = -25.62%
Formula
Percentage change = [(479 - 644) / 644] x 100
Subtract the new number by the original number
479 - 644 = -165
-165 ÷ 644 = -0.2562111801242236
-0.2562111801242236 x 100 = -25.62%