-78.99% is the change from 909 to 191
Calculation steps:
[( 191 - 909 ) ÷ 909] x 100 = -78.99%
Formula
Percentage change = [(191 - 909) / 909] x 100
Subtract the new number by the original number
191 - 909 = -718
-718 ÷ 909 = -0.7898789878987899
-0.7898789878987899 x 100 = -78.99%