-35.25% is the change from 661 to 428
Calculation steps:
[( 428 - 661 ) ÷ 661] x 100 = -35.25%
Formula
Percentage change = [(428 - 661) / 661] x 100
Subtract the new number by the original number
428 - 661 = -233
-233 ÷ 661 = -0.3524962178517398
-0.3524962178517398 x 100 = -35.25%