66.87% is the change from 492 to 821
Calculation steps:
[( 821 - 492 ) ÷ 492] x 100 = 66.87%
Formula
Percentage change = [(821 - 492) / 492] x 100
Subtract the new number by the original number
821 - 492 = 329
329 ÷ 492 = 0.6686991869918699
0.6686991869918699 x 100 = 66.87%