-20.12% is the change from 343 to 274
Calculation steps:
[( 274 - 343 ) ÷ 343] x 100 = -20.12%
Formula
Percentage change = [(274 - 343) / 343] x 100
Subtract the new number by the original number
274 - 343 = -69
-69 ÷ 343 = -0.20116618075801748
-0.20116618075801748 x 100 = -20.12%