21.94% is the change from 278 to 339
Calculation steps:
[( 339 - 278 ) ÷ 278] x 100 = 21.94%
Formula
Percentage change = [(339 - 278) / 278] x 100
Subtract the new number by the original number
339 - 278 = 61
61 ÷ 278 = 0.21942446043165467
0.21942446043165467 x 100 = 21.94%