-91.6% is the change from 655 to 55
Calculation steps:
[( 55 - 655 ) ÷ 655] x 100 = -91.6%
Formula
Percentage change = [(55 - 655) / 655] x 100
Subtract the new number by the original number
55 - 655 = -600
-600 ÷ 655 = -0.916030534351145
-0.916030534351145 x 100 = -91.6%