70.33% is the change from 300 to 511
Calculation steps:
[( 511 - 300 ) ÷ 300] x 100 = 70.33%
Formula
Percentage change = [(511 - 300) / 300] x 100
Subtract the new number by the original number
511 - 300 = 211
211 ÷ 300 = 0.7033333333333334
0.7033333333333334 x 100 = 70.33%