209.84% is the change from 305 to 945
Calculation steps:
[( 945 - 305 ) ÷ 305] x 100 = 209.84%
Formula
Percentage change = [(945 - 305) / 305] x 100
Subtract the new number by the original number
945 - 305 = 640
640 ÷ 305 = 2.098360655737705
2.098360655737705 x 100 = 209.84%