311.98% is the change from 242 to 997
Calculation steps:
[( 997 - 242 ) ÷ 242] x 100 = 311.98%
Formula
Percentage change = [(997 - 242) / 242] x 100
Subtract the new number by the original number
997 - 242 = 755
755 ÷ 242 = 3.1198347107438016
3.1198347107438016 x 100 = 311.98%