-79.08% is the change from 435 to 91
Calculation steps:
[( 91 - 435 ) ÷ 435] x 100 = -79.08%
Formula
Percentage change = [(91 - 435) / 435] x 100
Subtract the new number by the original number
91 - 435 = -344
-344 ÷ 435 = -0.7908045977011494
-0.7908045977011494 x 100 = -79.08%