146.36% is the change from 261 to 643
Calculation steps:
[( 643 - 261 ) ÷ 261] x 100 = 146.36%
Formula
Percentage change = [(643 - 261) / 261] x 100
Subtract the new number by the original number
643 - 261 = 382
382 ÷ 261 = 1.4636015325670497
1.4636015325670497 x 100 = 146.36%