-95.42% is the change from 502 to 23
Calculation steps:
[( 23 - 502 ) ÷ 502] x 100 = -95.42%
Formula
Percentage change = [(23 - 502) / 502] x 100
Subtract the new number by the original number
23 - 502 = -479
-479 ÷ 502 = -0.954183266932271
-0.954183266932271 x 100 = -95.42%