-66.52% is the change from 911 to 305
Calculation steps:
[( 305 - 911 ) ÷ 911] x 100 = -66.52%
Formula
Percentage change = [(305 - 911) / 911] x 100
Subtract the new number by the original number
305 - 911 = -606
-606 ÷ 911 = -0.6652030735455543
-0.6652030735455543 x 100 = -66.52%