-39.76% is the change from 249 to 150
Calculation steps:
[( 150 - 249 ) ÷ 249] x 100 = -39.76%
Formula
Percentage change = [(150 - 249) / 249] x 100
Subtract the new number by the original number
150 - 249 = -99
-99 ÷ 249 = -0.39759036144578314
-0.39759036144578314 x 100 = -39.76%