-98.02% is the change from 657 to 13
Calculation steps:
[( 13 - 657 ) ÷ 657] x 100 = -98.02%
Formula
Percentage change = [(13 - 657) / 657] x 100
Subtract the new number by the original number
13 - 657 = -644
-644 ÷ 657 = -0.9802130898021308
-0.9802130898021308 x 100 = -98.02%