-79.13% is the change from 436 to 91
Calculation steps:
[( 91 - 436 ) ÷ 436] x 100 = -79.13%
Formula
Percentage change = [(91 - 436) / 436] x 100
Subtract the new number by the original number
91 - 436 = -345
-345 ÷ 436 = -0.7912844036697247
-0.7912844036697247 x 100 = -79.13%