280% is the change from 65 to 247
Calculation steps:
[( 247 - 65 ) ÷ 65] x 100 = 280%
Formula
Percentage change = [(247 - 65) / 65] x 100
Subtract the new number by the original number
247 - 65 = 182
182 ÷ 65 = 2.8
2.8 x 100 = 280%
Example