153.75% is the change from 320 to 812
Calculation steps:
[( 812 - 320 ) ÷ 320] x 100 = 153.75%
Formula
Percentage change = [(812 - 320) / 320] x 100
Subtract the new number by the original number
812 - 320 = 492
492 ÷ 320 = 1.5375
1.5375 x 100 = 153.75%