-81.94% is the change from 537 to 97
Calculation steps:
[( 97 - 537 ) ÷ 537] x 100 = -81.94%
Formula
Percentage change = [(97 - 537) / 537] x 100
Subtract the new number by the original number
97 - 537 = -440
-440 ÷ 537 = -0.819366852886406
-0.819366852886406 x 100 = -81.94%