93.85% is the change from 309 to 599
Calculation steps:
[( 599 - 309 ) ÷ 309] x 100 = 93.85%
Formula
Percentage change = [(599 - 309) / 309] x 100
Subtract the new number by the original number
599 - 309 = 290
290 ÷ 309 = 0.9385113268608414
0.9385113268608414 x 100 = 93.85%