-80.04% is the change from 456 to 91
Calculation steps:
[( 91 - 456 ) ÷ 456] x 100 = -80.04%
Formula
Percentage change = [(91 - 456) / 456] x 100
Subtract the new number by the original number
91 - 456 = -365
-365 ÷ 456 = -0.8004385964912281
-0.8004385964912281 x 100 = -80.04%