-63.26% is the change from 645 to 237
Calculation steps:
[( 237 - 645 ) ÷ 645] x 100 = -63.26%
Formula
Percentage change = [(237 - 645) / 645] x 100
Subtract the new number by the original number
237 - 645 = -408
-408 ÷ 645 = -0.6325581395348837
-0.6325581395348837 x 100 = -63.26%