-79.75% is the change from 479 to 97
Calculation steps:
[( 97 - 479 ) ÷ 479] x 100 = -79.75%
Formula
Percentage change = [(97 - 479) / 479] x 100
Subtract the new number by the original number
97 - 479 = -382
-382 ÷ 479 = -0.7974947807933194
-0.7974947807933194 x 100 = -79.75%