65.54% is the change from 505 to 836
Calculation steps:
[( 836 - 505 ) ÷ 505] x 100 = 65.54%
Formula
Percentage change = [(836 - 505) / 505] x 100
Subtract the new number by the original number
836 - 505 = 331
331 ÷ 505 = 0.6554455445544555
0.6554455445544555 x 100 = 65.54%