-72.44% is the change from 780 to 215
Calculation steps:
[( 215 - 780 ) ÷ 780] x 100 = -72.44%
Formula
Percentage change = [(215 - 780) / 780] x 100
Subtract the new number by the original number
215 - 780 = -565
-565 ÷ 780 = -0.7243589743589743
-0.7243589743589743 x 100 = -72.44%