66.76% is the change from 346 to 577
Calculation steps:
[( 577 - 346 ) ÷ 346] x 100 = 66.76%
Formula
Percentage change = [(577 - 346) / 346] x 100
Subtract the new number by the original number
577 - 346 = 231
231 ÷ 346 = 0.6676300578034682
0.6676300578034682 x 100 = 66.76%