68.04% is the change from 485 to 815
Calculation steps:
[( 815 - 485 ) ÷ 485] x 100 = 68.04%
Formula
Percentage change = [(815 - 485) / 485] x 100
Subtract the new number by the original number
815 - 485 = 330
330 ÷ 485 = 0.6804123711340206
0.6804123711340206 x 100 = 68.04%