299.06% is the change from 213 to 850
Calculation steps:
[( 850 - 213 ) ÷ 213] x 100 = 299.06%
Formula
Percentage change = [(850 - 213) / 213] x 100
Subtract the new number by the original number
850 - 213 = 637
637 ÷ 213 = 2.9906103286384975
2.9906103286384975 x 100 = 299.06%