307.62% is the change from 210 to 856
Calculation steps:
[( 856 - 210 ) ÷ 210] x 100 = 307.62%
Formula
Percentage change = [(856 - 210) / 210] x 100
Subtract the new number by the original number
856 - 210 = 646
646 ÷ 210 = 3.0761904761904764
3.0761904761904764 x 100 = 307.62%