41.98% is the change from 243 to 345
Calculation steps:
[( 345 - 243 ) ÷ 243] x 100 = 41.98%
Formula
Percentage change = [(345 - 243) / 243] x 100
Subtract the new number by the original number
345 - 243 = 102
102 ÷ 243 = 0.41975308641975306
0.41975308641975306 x 100 = 41.98%