-79.96% is the change from 504 to 101
Calculation steps:
[( 101 - 504 ) ÷ 504] x 100 = -79.96%
Formula
Percentage change = [(101 - 504) / 504] x 100
Subtract the new number by the original number
101 - 504 = -403
-403 ÷ 504 = -0.7996031746031746
-0.7996031746031746 x 100 = -79.96%