-89.29% is the change from 616 to 66
Calculation steps:
[( 66 - 616 ) ÷ 616] x 100 = -89.29%
Formula
Percentage change = [(66 - 616) / 616] x 100
Subtract the new number by the original number
66 - 616 = -550
-550 ÷ 616 = -0.8928571428571429
-0.8928571428571429 x 100 = -89.29%