-83.61% is the change from 909 to 149
Calculation steps:
[( 149 - 909 ) ÷ 909] x 100 = -83.61%
Formula
Percentage change = [(149 - 909) / 909] x 100
Subtract the new number by the original number
149 - 909 = -760
-760 ÷ 909 = -0.8360836083608361
-0.8360836083608361 x 100 = -83.61%