-60.51% is the change from 866 to 342
Calculation steps:
[( 342 - 866 ) ÷ 866] x 100 = -60.51%
Formula
Percentage change = [(342 - 866) / 866] x 100
Subtract the new number by the original number
342 - 866 = -524
-524 ÷ 866 = -0.605080831408776
-0.605080831408776 x 100 = -60.51%