-91.17% is the change from 623 to 55
Calculation steps:
[( 55 - 623 ) ÷ 623] x 100 = -91.17%
Formula
Percentage change = [(55 - 623) / 623] x 100
Subtract the new number by the original number
55 - 623 = -568
-568 ÷ 623 = -0.9117174959871589
-0.9117174959871589 x 100 = -91.17%