-67.62% is the change from 661 to 214
Calculation steps:
[( 214 - 661 ) ÷ 661] x 100 = -67.62%
Formula
Percentage change = [(214 - 661) / 661] x 100
Subtract the new number by the original number
214 - 661 = -447
-447 ÷ 661 = -0.6762481089258698
-0.6762481089258698 x 100 = -67.62%