-79.91% is the change from 453 to 91
Calculation steps:
[( 91 - 453 ) ÷ 453] x 100 = -79.91%
Formula
Percentage change = [(91 - 453) / 453] x 100
Subtract the new number by the original number
91 - 453 = -362
-362 ÷ 453 = -0.7991169977924945
-0.7991169977924945 x 100 = -79.91%