258.24% is the change from 273 to 978
Calculation steps:
[( 978 - 273 ) ÷ 273] x 100 = 258.24%
Formula
Percentage change = [(978 - 273) / 273] x 100
Subtract the new number by the original number
978 - 273 = 705
705 ÷ 273 = 2.5824175824175826
2.5824175824175826 x 100 = 258.24%