75.08% is the change from 309 to 541
Calculation steps:
[( 541 - 309 ) ÷ 309] x 100 = 75.08%
Formula
Percentage change = [(541 - 309) / 309] x 100
Subtract the new number by the original number
541 - 309 = 232
232 ÷ 309 = 0.7508090614886731
0.7508090614886731 x 100 = 75.08%