231.05% is the change from 248 to 821
Calculation steps:
[( 821 - 248 ) ÷ 248] x 100 = 231.05%
Formula
Percentage change = [(821 - 248) / 248] x 100
Subtract the new number by the original number
821 - 248 = 573
573 ÷ 248 = 2.310483870967742
2.310483870967742 x 100 = 231.05%