69.77% is the change from 344 to 584
Calculation steps:
[( 584 - 344 ) ÷ 344] x 100 = 69.77%
Formula
Percentage change = [(584 - 344) / 344] x 100
Subtract the new number by the original number
584 - 344 = 240
240 ÷ 344 = 0.6976744186046512
0.6976744186046512 x 100 = 69.77%