67.25% is the change from 345 to 577
Calculation steps:
[( 577 - 345 ) ÷ 345] x 100 = 67.25%
Formula
Percentage change = [(577 - 345) / 345] x 100
Subtract the new number by the original number
577 - 345 = 232
232 ÷ 345 = 0.672463768115942
0.672463768115942 x 100 = 67.25%