-22.69% is the change from 648 to 501
Calculation steps:
[( 501 - 648 ) ÷ 648] x 100 = -22.69%
Formula
Percentage change = [(501 - 648) / 648] x 100
Subtract the new number by the original number
501 - 648 = -147
-147 ÷ 648 = -0.22685185185185186
-0.22685185185185186 x 100 = -22.69%