67.7% is the change from 486 to 815
Calculation steps:
[( 815 - 486 ) ÷ 486] x 100 = 67.7%
Formula
Percentage change = [(815 - 486) / 486] x 100
Subtract the new number by the original number
815 - 486 = 329
329 ÷ 486 = 0.676954732510288
0.676954732510288 x 100 = 67.7%