69.49% is the change from 331 to 561
Calculation steps:
[( 561 - 331 ) ÷ 331] x 100 = 69.49%
Formula
Percentage change = [(561 - 331) / 331] x 100
Subtract the new number by the original number
561 - 331 = 230
230 ÷ 331 = 0.6948640483383686
0.6948640483383686 x 100 = 69.49%