170.72% is the change from 304 to 823
Calculation steps:
[( 823 - 304 ) ÷ 304] x 100 = 170.72%
Formula
Percentage change = [(823 - 304) / 304] x 100
Subtract the new number by the original number
823 - 304 = 519
519 ÷ 304 = 1.707236842105263
1.707236842105263 x 100 = 170.72%