-77.75% is the change from 971 to 216
Calculation steps:
[( 216 - 971 ) ÷ 971] x 100 = -77.75%
Formula
Percentage change = [(216 - 971) / 971] x 100
Subtract the new number by the original number
216 - 971 = -755
-755 ÷ 971 = -0.7775489186405767
-0.7775489186405767 x 100 = -77.75%