-39.42% is the change from 827 to 501
Calculation steps:
[( 501 - 827 ) ÷ 827] x 100 = -39.42%
Formula
Percentage change = [(501 - 827) / 827] x 100
Subtract the new number by the original number
501 - 827 = -326
-326 ÷ 827 = -0.3941958887545345
-0.3941958887545345 x 100 = -39.42%