34.3% is the change from 207 to 278
Calculation steps:
[( 278 - 207 ) ÷ 207] x 100 = 34.3%
Formula
Percentage change = [(278 - 207) / 207] x 100
Subtract the new number by the original number
278 - 207 = 71
71 ÷ 207 = 0.34299516908212563
0.34299516908212563 x 100 = 34.3%