21.86% is the change from 279 to 340
Calculation steps:
[( 340 - 279 ) ÷ 279] x 100 = 21.86%
Formula
Percentage change = [(340 - 279) / 279] x 100
Subtract the new number by the original number
340 - 279 = 61
61 ÷ 279 = 0.21863799283154123
0.21863799283154123 x 100 = 21.86%