69.67% is the change from 488 to 828
Calculation steps:
[( 828 - 488 ) ÷ 488] x 100 = 69.67%
Formula
Percentage change = [(828 - 488) / 488] x 100
Subtract the new number by the original number
828 - 488 = 340
340 ÷ 488 = 0.6967213114754098
0.6967213114754098 x 100 = 69.67%