145.98% is the change from 261 to 642
Calculation steps:
[( 642 - 261 ) ÷ 261] x 100 = 145.98%
Formula
Percentage change = [(642 - 261) / 261] x 100
Subtract the new number by the original number
642 - 261 = 381
381 ÷ 261 = 1.4597701149425288
1.4597701149425288 x 100 = 145.98%