174.07% is the change from 243 to 666
Calculation steps:
[( 666 - 243 ) ÷ 243] x 100 = 174.07%
Formula
Percentage change = [(666 - 243) / 243] x 100
Subtract the new number by the original number
666 - 243 = 423
423 ÷ 243 = 1.7407407407407407
1.7407407407407407 x 100 = 174.07%