-64.09% is the change from 660 to 237
Calculation steps:
[( 237 - 660 ) ÷ 660] x 100 = -64.09%
Formula
Percentage change = [(237 - 660) / 660] x 100
Subtract the new number by the original number
237 - 660 = -423
-423 ÷ 660 = -0.6409090909090909
-0.6409090909090909 x 100 = -64.09%