69% is the change from 300 to 507
Calculation steps:
[( 507 - 300 ) ÷ 300] x 100 = 69%
Formula
Percentage change = [(507 - 300) / 300] x 100
Subtract the new number by the original number
507 - 300 = 207
207 ÷ 300 = 0.69
0.69 x 100 = 69%
Example