170.63% is the change from 303 to 820
Calculation steps:
[( 820 - 303 ) ÷ 303] x 100 = 170.63%
Formula
Percentage change = [(820 - 303) / 303] x 100
Subtract the new number by the original number
820 - 303 = 517
517 ÷ 303 = 1.7062706270627064
1.7062706270627064 x 100 = 170.63%