-73.55% is the change from 344 to 91
Calculation steps:
[( 91 - 344 ) ÷ 344] x 100 = -73.55%
Formula
Percentage change = [(91 - 344) / 344] x 100
Subtract the new number by the original number
91 - 344 = -253
-253 ÷ 344 = -0.7354651162790697
-0.7354651162790697 x 100 = -73.55%