-25.11% is the change from 669 to 501
Calculation steps:
[( 501 - 669 ) ÷ 669] x 100 = -25.11%
Formula
Percentage change = [(501 - 669) / 669] x 100
Subtract the new number by the original number
501 - 669 = -168
-168 ÷ 669 = -0.25112107623318386
-0.25112107623318386 x 100 = -25.11%