-99.2% is the change from 249 to 2
Calculation steps:
[( 2 - 249 ) ÷ 249] x 100 = -99.2%
Formula
Percentage change = [(2 - 249) / 249] x 100
Subtract the new number by the original number
2 - 249 = -247
-247 ÷ 249 = -0.9919678714859438
-0.9919678714859438 x 100 = -99.2%