-91.58% is the change from 606 to 51
Calculation steps:
[( 51 - 606 ) ÷ 606] x 100 = -91.58%
Formula
Percentage change = [(51 - 606) / 606] x 100
Subtract the new number by the original number
51 - 606 = -555
-555 ÷ 606 = -0.9158415841584159
-0.9158415841584159 x 100 = -91.58%