-71.86% is the change from 764 to 215
Calculation steps:
[( 215 - 764 ) ÷ 764] x 100 = -71.86%
Formula
Percentage change = [(215 - 764) / 764] x 100
Subtract the new number by the original number
215 - 764 = -549
-549 ÷ 764 = -0.7185863874345549
-0.7185863874345549 x 100 = -71.86%