-77.6% is the change from 866 to 194
Calculation steps:
[( 194 - 866 ) ÷ 866] x 100 = -77.6%
Formula
Percentage change = [(194 - 866) / 866] x 100
Subtract the new number by the original number
194 - 866 = -672
-672 ÷ 866 = -0.7759815242494227
-0.7759815242494227 x 100 = -77.6%