-75.29% is the change from 866 to 214
Calculation steps:
[( 214 - 866 ) ÷ 866] x 100 = -75.29%
Formula
Percentage change = [(214 - 866) / 866] x 100
Subtract the new number by the original number
214 - 866 = -652
-652 ÷ 866 = -0.7528868360277137
-0.7528868360277137 x 100 = -75.29%