-60.77% is the change from 678 to 266
Calculation steps:
[( 266 - 678 ) ÷ 678] x 100 = -60.77%
Formula
Percentage change = [(266 - 678) / 678] x 100
Subtract the new number by the original number
266 - 678 = -412
-412 ÷ 678 = -0.6076696165191741
-0.6076696165191741 x 100 = -60.77%