-79.13% is the change from 503 to 105
Calculation steps:
[( 105 - 503 ) ÷ 503] x 100 = -79.13%
Formula
Percentage change = [(105 - 503) / 503] x 100
Subtract the new number by the original number
105 - 503 = -398
-398 ÷ 503 = -0.7912524850894632
-0.7912524850894632 x 100 = -79.13%