-71.56% is the change from 770 to 219
Calculation steps:
[( 219 - 770 ) ÷ 770] x 100 = -71.56%
Formula
Percentage change = [(219 - 770) / 770] x 100
Subtract the new number by the original number
219 - 770 = -551
-551 ÷ 770 = -0.7155844155844155
-0.7155844155844155 x 100 = -71.56%