-41.71% is the change from 911 to 531
Calculation steps:
[( 531 - 911 ) ÷ 911] x 100 = -41.71%
Formula
Percentage change = [(531 - 911) / 911] x 100
Subtract the new number by the original number
531 - 911 = -380
-380 ÷ 911 = -0.41712403951701427
-0.41712403951701427 x 100 = -41.71%