283.72% is the change from 258 to 990
Calculation steps:
[( 990 - 258 ) ÷ 258] x 100 = 283.72%
Formula
Percentage change = [(990 - 258) / 258] x 100
Subtract the new number by the original number
990 - 258 = 732
732 ÷ 258 = 2.8372093023255816
2.8372093023255816 x 100 = 283.72%