30.43% is the change from 207 to 270
Calculation steps:
[( 270 - 207 ) ÷ 207] x 100 = 30.43%
Formula
Percentage change = [(270 - 207) / 207] x 100
Subtract the new number by the original number
270 - 207 = 63
63 ÷ 207 = 0.30434782608695654
0.30434782608695654 x 100 = 30.43%