-71.85% is the change from 771 to 217
Calculation steps:
[( 217 - 771 ) ÷ 771] x 100 = -71.85%
Formula
Percentage change = [(217 - 771) / 771] x 100
Subtract the new number by the original number
217 - 771 = -554
-554 ÷ 771 = -0.7185473411154345
-0.7185473411154345 x 100 = -71.85%