-98.42% is the change from 949 to 15
Calculation steps:
[( 15 - 949 ) ÷ 949] x 100 = -98.42%
Formula
Percentage change = [(15 - 949) / 949] x 100
Subtract the new number by the original number
15 - 949 = -934
-934 ÷ 949 = -0.9841938883034773
-0.9841938883034773 x 100 = -98.42%