158.2% is the change from 311 to 803
Calculation steps:
[( 803 - 311 ) ÷ 311] x 100 = 158.2%
Formula
Percentage change = [(803 - 311) / 311] x 100
Subtract the new number by the original number
803 - 311 = 492
492 ÷ 311 = 1.5819935691318328
1.5819935691318328 x 100 = 158.2%