175.5% is the change from 298 to 821
Calculation steps:
[( 821 - 298 ) ÷ 298] x 100 = 175.5%
Formula
Percentage change = [(821 - 298) / 298] x 100
Subtract the new number by the original number
821 - 298 = 523
523 ÷ 298 = 1.75503355704698
1.75503355704698 x 100 = 175.5%