-76.4% is the change from 911 to 215
Calculation steps:
[( 215 - 911 ) ÷ 911] x 100 = -76.4%
Formula
Percentage change = [(215 - 911) / 911] x 100
Subtract the new number by the original number
215 - 911 = -696
-696 ÷ 911 = -0.7639956092206367
-0.7639956092206367 x 100 = -76.4%