33.79% is the change from 506 to 677
Calculation steps:
[( 677 - 506 ) ÷ 506] x 100 = 33.79%
Formula
Percentage change = [(677 - 506) / 506] x 100
Subtract the new number by the original number
677 - 506 = 171
171 ÷ 506 = 0.33794466403162055
0.33794466403162055 x 100 = 33.79%