-69.18% is the change from 717 to 221
Calculation steps:
[( 221 - 717 ) ÷ 717] x 100 = -69.18%
Formula
Percentage change = [(221 - 717) / 717] x 100
Subtract the new number by the original number
221 - 717 = -496
-496 ÷ 717 = -0.691771269177127
-0.691771269177127 x 100 = -69.18%