200.98% is the change from 306 to 921
Calculation steps:
[( 921 - 306 ) ÷ 306] x 100 = 200.98%
Formula
Percentage change = [(921 - 306) / 306] x 100
Subtract the new number by the original number
921 - 306 = 615
615 ÷ 306 = 2.0098039215686274
2.0098039215686274 x 100 = 200.98%