-34.17% is the change from 998 to 657
Calculation steps:
[( 657 - 998 ) ÷ 998] x 100 = -34.17%
Formula
Percentage change = [(657 - 998) / 998] x 100
Subtract the new number by the original number
657 - 998 = -341
-341 ÷ 998 = -0.34168336673346694
-0.34168336673346694 x 100 = -34.17%