-53.18% is the change from 645 to 302
Calculation steps:
[( 302 - 645 ) ÷ 645] x 100 = -53.18%
Formula
Percentage change = [(302 - 645) / 645] x 100
Subtract the new number by the original number
302 - 645 = -343
-343 ÷ 645 = -0.5317829457364341
-0.5317829457364341 x 100 = -53.18%