70.9% is the change from 488 to 834
Calculation steps:
[( 834 - 488 ) ÷ 488] x 100 = 70.9%
Formula
Percentage change = [(834 - 488) / 488] x 100
Subtract the new number by the original number
834 - 488 = 346
346 ÷ 488 = 0.7090163934426229
0.7090163934426229 x 100 = 70.9%