-66.82% is the change from 217 to 72
Calculation steps:
[( 72 - 217 ) ÷ 217] x 100 = -66.82%
Formula
Percentage change = [(72 - 217) / 217] x 100
Subtract the new number by the original number
72 - 217 = -145
-145 ÷ 217 = -0.6682027649769585
-0.6682027649769585 x 100 = -66.82%