206.25% is the change from 320 to 980
Calculation steps:
[( 980 - 320 ) ÷ 320] x 100 = 206.25%
Formula
Percentage change = [(980 - 320) / 320] x 100
Subtract the new number by the original number
980 - 320 = 660
660 ÷ 320 = 2.0625
2.0625 x 100 = 206.25%