296.3% is the change from 216 to 856
Calculation steps:
[( 856 - 216 ) ÷ 216] x 100 = 296.3%
Formula
Percentage change = [(856 - 216) / 216] x 100
Subtract the new number by the original number
856 - 216 = 640
640 ÷ 216 = 2.962962962962963
2.962962962962963 x 100 = 296.3%