-43.8% is the change from 911 to 512
Calculation steps:
[( 512 - 911 ) ÷ 911] x 100 = -43.8%
Formula
Percentage change = [(512 - 911) / 911] x 100
Subtract the new number by the original number
512 - 911 = -399
-399 ÷ 911 = -0.43798024149286496
-0.43798024149286496 x 100 = -43.8%