-36.07% is the change from 840 to 537
Calculation steps:
[( 537 - 840 ) ÷ 840] x 100 = -36.07%
Formula
Percentage change = [(537 - 840) / 840] x 100
Subtract the new number by the original number
537 - 840 = -303
-303 ÷ 840 = -0.3607142857142857
-0.3607142857142857 x 100 = -36.07%