135.53% is the change from 273 to 643
Calculation steps:
[( 643 - 273 ) ÷ 273] x 100 = 135.53%
Formula
Percentage change = [(643 - 273) / 273] x 100
Subtract the new number by the original number
643 - 273 = 370
370 ÷ 273 = 1.3553113553113554
1.3553113553113554 x 100 = 135.53%