-66.56% is the change from 637 to 213
Calculation steps:
[( 213 - 637 ) ÷ 637] x 100 = -66.56%
Formula
Percentage change = [(213 - 637) / 637] x 100
Subtract the new number by the original number
213 - 637 = -424
-424 ÷ 637 = -0.6656200941915228
-0.6656200941915228 x 100 = -66.56%