69.77% is the change from 301 to 511
Calculation steps:
[( 511 - 301 ) ÷ 301] x 100 = 69.77%
Formula
Percentage change = [(511 - 301) / 301] x 100
Subtract the new number by the original number
511 - 301 = 210
210 ÷ 301 = 0.6976744186046512
0.6976744186046512 x 100 = 69.77%