-92.21% is the change from 655 to 51
Calculation steps:
[( 51 - 655 ) ÷ 655] x 100 = -92.21%
Formula
Percentage change = [(51 - 655) / 655] x 100
Subtract the new number by the original number
51 - 655 = -604
-604 ÷ 655 = -0.9221374045801527
-0.9221374045801527 x 100 = -92.21%