6.85% is the change from 219 to 234
Calculation steps:
[( 234 - 219 ) ÷ 219] x 100 = 6.85%
Formula
Percentage change = [(234 - 219) / 219] x 100
Subtract the new number by the original number
234 - 219 = 15
15 ÷ 219 = 0.0684931506849315
0.0684931506849315 x 100 = 6.85%