-19.17% is the change from 339 to 274
Calculation steps:
[( 274 - 339 ) ÷ 339] x 100 = -19.17%
Formula
Percentage change = [(274 - 339) / 339] x 100
Subtract the new number by the original number
274 - 339 = -65
-65 ÷ 339 = -0.19174041297935104
-0.19174041297935104 x 100 = -19.17%