157.37% is the change from 319 to 821
Calculation steps:
[( 821 - 319 ) ÷ 319] x 100 = 157.37%
Formula
Percentage change = [(821 - 319) / 319] x 100
Subtract the new number by the original number
821 - 319 = 502
502 ÷ 319 = 1.573667711598746
1.573667711598746 x 100 = 157.37%