-77.78% is the change from 909 to 202
Calculation steps:
[( 202 - 909 ) ÷ 909] x 100 = -77.78%
Formula
Percentage change = [(202 - 909) / 909] x 100
Subtract the new number by the original number
202 - 909 = -707
-707 ÷ 909 = -0.7777777777777778
-0.7777777777777778 x 100 = -77.78%