98.8% is the change from 249 to 495
Calculation steps:
[( 495 - 249 ) ÷ 249] x 100 = 98.8%
Formula
Percentage change = [(495 - 249) / 249] x 100
Subtract the new number by the original number
495 - 249 = 246
246 ÷ 249 = 0.9879518072289156
0.9879518072289156 x 100 = 98.8%