174.11% is the change from 309 to 847
Calculation steps:
[( 847 - 309 ) ÷ 309] x 100 = 174.11%
Formula
Percentage change = [(847 - 309) / 309] x 100
Subtract the new number by the original number
847 - 309 = 538
538 ÷ 309 = 1.7411003236245954
1.7411003236245954 x 100 = 174.11%