251.24% is the change from 242 to 850
Calculation steps:
[( 850 - 242 ) ÷ 242] x 100 = 251.24%
Formula
Percentage change = [(850 - 242) / 242] x 100
Subtract the new number by the original number
850 - 242 = 608
608 ÷ 242 = 2.512396694214876
2.512396694214876 x 100 = 251.24%