-66.05% is the change from 866 to 294
Calculation steps:
[( 294 - 866 ) ÷ 866] x 100 = -66.05%
Formula
Percentage change = [(294 - 866) / 866] x 100
Subtract the new number by the original number
294 - 866 = -572
-572 ÷ 866 = -0.6605080831408776
-0.6605080831408776 x 100 = -66.05%