-79.32% is the change from 440 to 91
Calculation steps:
[( 91 - 440 ) ÷ 440] x 100 = -79.32%
Formula
Percentage change = [(91 - 440) / 440] x 100
Subtract the new number by the original number
91 - 440 = -349
-349 ÷ 440 = -0.7931818181818182
-0.7931818181818182 x 100 = -79.32%