-76.44% is the change from 938 to 221
Calculation steps:
[( 221 - 938 ) ÷ 938] x 100 = -76.44%
Formula
Percentage change = [(221 - 938) / 938] x 100
Subtract the new number by the original number
221 - 938 = -717
-717 ÷ 938 = -0.7643923240938166
-0.7643923240938166 x 100 = -76.44%