-22.52% is the change from 644 to 499
Calculation steps:
[( 499 - 644 ) ÷ 644] x 100 = -22.52%
Formula
Percentage change = [(499 - 644) / 644] x 100
Subtract the new number by the original number
499 - 644 = -145
-145 ÷ 644 = -0.2251552795031056
-0.2251552795031056 x 100 = -22.52%