31.38% is the change from 647 to 850
Calculation steps:
[( 850 - 647 ) ÷ 647] x 100 = 31.38%
Formula
Percentage change = [(850 - 647) / 647] x 100
Subtract the new number by the original number
850 - 647 = 203
203 ÷ 647 = 0.31375579598145287
0.31375579598145287 x 100 = 31.38%