30.79% is the change from 617 to 807
Calculation steps:
[( 807 - 617 ) ÷ 617] x 100 = 30.79%
Formula
Percentage change = [(807 - 617) / 617] x 100
Subtract the new number by the original number
807 - 617 = 190
190 ÷ 617 = 0.3079416531604538
0.3079416531604538 x 100 = 30.79%