300.93% is the change from 216 to 866
Calculation steps:
[( 866 - 216 ) ÷ 216] x 100 = 300.93%
Formula
Percentage change = [(866 - 216) / 216] x 100
Subtract the new number by the original number
866 - 216 = 650
650 ÷ 216 = 3.009259259259259
3.009259259259259 x 100 = 300.93%