-65.51% is the change from 661 to 228
Calculation steps:
[( 228 - 661 ) ÷ 661] x 100 = -65.51%
Formula
Percentage change = [(228 - 661) / 661] x 100
Subtract the new number by the original number
228 - 661 = -433
-433 ÷ 661 = -0.6550680786686838
-0.6550680786686838 x 100 = -65.51%