-79.68% is the change from 507 to 103
Calculation steps:
[( 103 - 507 ) ÷ 507] x 100 = -79.68%
Formula
Percentage change = [(103 - 507) / 507] x 100
Subtract the new number by the original number
103 - 507 = -404
-404 ÷ 507 = -0.796844181459566
-0.796844181459566 x 100 = -79.68%