-75.9% is the change from 917 to 221
Calculation steps:
[( 221 - 917 ) ÷ 917] x 100 = -75.9%
Formula
Percentage change = [(221 - 917) / 917] x 100
Subtract the new number by the original number
221 - 917 = -696
-696 ÷ 917 = -0.7589967284623773
-0.7589967284623773 x 100 = -75.9%