200% is the change from 91 to 273
Calculation steps:
[( 273 - 91 ) ÷ 91] x 100 = 200%
Formula
Percentage change = [(273 - 91) / 91] x 100
Subtract the new number by the original number
273 - 91 = 182
182 ÷ 91 = 2
2 x 100 = 200%
Example