152.96% is the change from 321 to 812
Calculation steps:
[( 812 - 321 ) ÷ 321] x 100 = 152.96%
Formula
Percentage change = [(812 - 321) / 321] x 100
Subtract the new number by the original number
812 - 321 = 491
491 ÷ 321 = 1.529595015576324
1.529595015576324 x 100 = 152.96%