-34.86% is the change from 657 to 428
Calculation steps:
[( 428 - 657 ) ÷ 657] x 100 = -34.86%
Formula
Percentage change = [(428 - 657) / 657] x 100
Subtract the new number by the original number
428 - 657 = -229
-229 ÷ 657 = -0.3485540334855403
-0.3485540334855403 x 100 = -34.86%