-81.2% is the change from 484 to 91
Calculation steps:
[( 91 - 484 ) ÷ 484] x 100 = -81.2%
Formula
Percentage change = [(91 - 484) / 484] x 100
Subtract the new number by the original number
91 - 484 = -393
-393 ÷ 484 = -0.8119834710743802
-0.8119834710743802 x 100 = -81.2%