71.03% is the change from 497 to 850
Calculation steps:
[( 850 - 497 ) ÷ 497] x 100 = 71.03%
Formula
Percentage change = [(850 - 497) / 497] x 100
Subtract the new number by the original number
850 - 497 = 353
353 ÷ 497 = 0.710261569416499
0.710261569416499 x 100 = 71.03%