153.44% is the change from 320 to 811
Calculation steps:
[( 811 - 320 ) ÷ 320] x 100 = 153.44%
Formula
Percentage change = [(811 - 320) / 320] x 100
Subtract the new number by the original number
811 - 320 = 491
491 ÷ 320 = 1.534375
1.534375 x 100 = 153.44%