75.36% is the change from 349 to 612
Calculation steps:
[( 612 - 349 ) ÷ 349] x 100 = 75.36%
Formula
Percentage change = [(612 - 349) / 349] x 100
Subtract the new number by the original number
612 - 349 = 263
263 ÷ 349 = 0.7535816618911175
0.7535816618911175 x 100 = 75.36%