-79.74% is the change from 538 to 109
Calculation steps:
[( 109 - 538 ) ÷ 538] x 100 = -79.74%
Formula
Percentage change = [(109 - 538) / 538] x 100
Subtract the new number by the original number
109 - 538 = -429
-429 ÷ 538 = -0.7973977695167286
-0.7973977695167286 x 100 = -79.74%